Sample phpstan.neon file to use when checking for Drupal 8 deprecated functions

phpstan.neon

parameters:
  customRulesetUsed: true
  reportUnmatchedIgnoredErrors: false
  # Exclude directories that you may need to
  excludes_analyse:
    - themes/custom/scholarly/js/revolution
  # Ignore phpstan-drupal extension's rules.
  ignoreErrors:
    - '#\Drupal calls should be avoided in classes, use dependency injection instead#'
    - '#Plugin definitions cannot be altered.#'
    - '#Missing cache backend declaration for performance.#'
    - '#Plugin manager has cache backend specified but does not declare cache tags.#'
    includes:
  - vendor/mglaman/phpstan-drupal/extension.neon
  - vendor/phpstan/phpstan-deprecation-rules/rules.neon